JPS5943182B2 - Kanetsusatsukinouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention includes a sterilization pot containing a package such as a canned, bottled, or bagged product filled with a substance to be sterilized, and a hot water tank that stores a heating medium such as hot water. Since it is possible to move the heat medium by force n due to the pressure difference f between the This relates to an automatic mechanical heat sterilizer capable of high-temperature, short-time sterilization using steam.

In heat sterilization, it is known that the killing rate of bacteria targeted for sterilization in packages such as canned, bottled, and bagged products increases approximately 10 times for every 10°C rise in temperature. In addition, the rate at which nutrients and the like are reduced increases by only about 2 times, so when sterilizing objects to be sterilized, it is desirable to sterilize them at high temperatures and in a short time.

Conventionally, (A) a mixture of steam and pressurized air at 100°C
Heat sterilizer for ~120℃, CB) A hot water tank is installed, and the hot water is moved by a pump.
There was a 5℃ hot water type 770 heat sterilizer.

However, for prisoners, the process of heating, sterilizing, and cooling is long.
It is not suitable for use for short-term sterilization.

In addition, (B) allows for high-temperature and short-time sterilization compared to (A), but since the heat medium is moved between the hot water tank storing the heating medium and the sterilization pot using a pump, it is difficult to sterilize at high temperatures. Even though the water is hot, it takes a long time to fill the sterilization pot with water and return the hot water to the hot water tank after sterilization, so the cycle required for sterilization becomes longer.
Since conventional sterilization is not carried out and the heating and cooling times are long, there are disadvantages in that the effects on the objects to be sterilized are extremely large.

The present invention provides a hot water type sterilizer that eliminates the drawbacks of the hot water type. To provide an automatic high-temperature sterilizer for both hot water type and steam type, which can be used as a steam sterilizer for sterilizing bagged foods according to No. 11771 with substantially the same piping of the hot water type sterilizer. The purpose is to

The present invention will be described in detail below with reference to the drawings.

The present invention is a high-temperature short-time heat sterilizer equipped with an upper hot water tank and a lower sterilization pot.

1 is a hot water tank, 2 is a sterilization pot, and the hot water tank 1 (
This is a water level gauge (not shown) to maintain a constant water level.
water supply pipe 2 with a water supply valve 11 operated continuously at
1 and the heating medium in the hot water tank 1 at a predetermined temperature and pressure, a thermometer and a pressure gauge (not shown) are used continuously.
Steam pipes 20,2 with steam valves 5.6 operated
0', a 7JO pressure air pipe 21 with a pressurized air valve 4 and an exhaust pipe 22 with an exhaust valve 14 are connected.

A drain pipe with a drain valve 12 is connected thereto.

The sterilization pot 2 has a steam valve 8 operated by a thermometer (not shown).
, 8", steam pipe 20' with steam valves 8', 8" operated by a pressure gauge (not shown) 2 Q///, force n pressure air valve Pressurized air pipe 21' with γ and exhaust pipe 23 with exhaust valve 15
is connected.

Further, the sterilizing pot 2 is connected to a circulation path 25 through which a heating medium during hot water sterilization and temporary cooling water for cooling overflow are circulated by a circulation pump 19.

This is used in conjunction with water supply.

The water supply pipe 26 with the water supply valve 10 is connected to the pump 1.
8 tons are connected, and a water supply pipe 261 is connected to the water supply pipe 21 to the hot water tank.

The overflow pipe 24f is equipped with an overflow valve 16.

A heat medium transfer pipe 30 equipped with a transfer valve 3 is connected to the hot water tank 1 and the sterilization pot 2.

The upper part of the sterilization pot 2 is equipped with a peacock valve 17 for moving the heat medium during steam sterilization.

Additionally, a drain pipe 29 equipped with a drain valve 13 for draining cooling water, etc. is connected.

These drain valve 13, exhaust valves 14, 15, and water supply valve 9
, 10, 11, steam valves 5, 6, 7, 8° 8', 8'', heated air valves 4, 1, overflow valve 16, moving valve 3, and peacock valve 17 are water level gauges, thermometers, and pressure gauges, respectively. etc., and hot water sterilization or steam sterilization is selected as necessary using a changeover switch (not shown).

The method of hot water sterilization and steam sterilization using the apparatus of the present invention will be explained below.

(a) In the case of hot water sterilization, first, open the water supply valve 11 of the hot water tank 1, and
Water is supplied from F until the water level gauge is activated, the pump 18 is stopped, and the water supply valve 11 is closed.

Next, the steam valve 5 and exhaust valve 14 open and heating begins.

At about 95°C, the exhaust valve 14 is closed and the pressure is gradually increased.

Thereafter, the exhaust valve 14 is opened and closed under pressure gauge control.

Set temperature (e.g. 145°C), set pressure (e.g. 3.5
kg/cri) f, the hot water preparation is completed and it is possible to move on to the next step.

Here, packages such as canned, bottled, and inferior packaging are stored in the sterilization pot 2.

When the operation of the sterilizing pot 2 is started, the pressure n pressure air valve 7,
A predetermined pressure (sterilization pressure, for example, 2.4 kg/cyit) is applied through the pressurized steam valve 8'.

Next, the transfer valve 3 is opened, and the hot water in the hot water tank 1 is injected from the bottom of the sterilization pot 2 through the transfer pipe 30 connected to the bottom of the hot water tank 1.

When a predetermined temperature (for example, 135° C.) is reached, the sterilization process is started.

When hot water is injected and the water level gauge at the top of the sterilizing pot 2 is activated, the transfer valve 3 is closed and the circulation pump 19 starts operating.

Note that the sterilization time is controlled by a timer.

At this time, set another timer so that the sterilization timer runs out for about 2 minutes @ 1 timer, and at the same time as the timer goes off (this circulation pump stops and the hot water in the sterilization pot is released by the pressure steam valve 8). The movement valve 3 is opened while maintaining the temperature by the action of the steam valve 8 to maintain the pressure at a constant f due to the action of t and the hot water is returned to the hot water tank 1.

However, when the movable valve 3 opens, the hot water tank 1 simultaneously opens the exhaust valve 14 and is reduced to a predetermined pressure (for example, 1.4 kg/i), and thereafter is automatically controlled.

As soon as the sterilization timer expires, the sterilization process is completed and the steam valves 8, 8', 8'' are closed.

Then, the pressurized air valve 1f is in the daily pressure state (here, 2.
4kVC1ft), the water supply valves 9 and 10 open, and the pump 18
゜19 (Water supply starts from here.

Pressure control is carried out by means of a force n-pressure air valve 7 and an exhaust valve 15.

When water continues to be supplied until the level switch at the top of the sterilizing pot 2 is activated, the overflow valve 16 opens, and water continues to be supplied for complete cooling.

The overflow step is operated by a timer t.

Items to be sterilized that take a long time to overflow can be cooled with the water supply stopped using the cooling maintenance timer.

When this overflow timer expires, the pump 18,
19 stops, overflow valve 16, water supply valves 9, 10
closes.

Next, the drain valve 13 opens, and water is drained under pressure from the pressurized air valve 7f.

When the draining is completed, the lower level switch of the sterilization pot 2 is activated, the pressurized air valve 7 is closed, the exhaust valve 15 is opened, and when the air is exhausted to normal pressure, the buzzer is activated and the 770 heat sterilization process begins. ends.

At this time, the hot water tank 1 is supplied with water to compensate for the shortage, and as described above, produces hot water at a predetermined temperature and a predetermined pressure, and is ready for the next process.

(0) In the case of steam sterilization (using the selector switch F), as in the case of hot water sterilization, the predetermined pressure and temperature (for example, 170'C7,
03kg/7) of saturated hot water is prepared.

(In this case, you only need to prepare hot water up to the middle level switch in the hot water tank.

)Next (as in the case of hot water sterilization, the items to be sterilized are placed in sterilization pot 2 (
The steam valves 8, 8'' and the exhaust valves 15 and 15' are opened to remove the air during sterilization.

When the temperature reaches about 100°C, the transfer valve 3 opens, and the hot water in the hot water tank 1 moves to the inlet of the sterilizing pot 2, where it is vaporized and raised to a predetermined temperature (for example, 135°C).

When the predetermined temperature F is reached, the moving valve 3 closes, and the steam valves 8, 8
', 8'', the exhaust valve 15 sets the temperature and pressure (e.g., 135°C, 2.2 kg/ff1)
- and the sterilization process begins.

At this time, the sterilization time is controlled by the timer t, and the saturated steam is stirred by the steam flowing through the peacock valve 17f.

When the sterilization timer runs out, the steam valves 8, 8', and 8'' close, and at the same time, the pressurized air valve 7 and the exhaust valve 15F control a predetermined pressure (for example, 2.5 kg/7F), and while maintaining this pressure. Open the water supply valves 9 and 10 and turn on the pump 1.
8°19 is activated and water supply continues until the level switch at the top of the sterilization pot is activated.

The subsequent steps are carried out in the same manner as in the hydrothermal method.

As described above, according to the present invention, hot water type and steam type high-temperature short-time sterilization can be performed in one system.

In the case of objects to be sterilized that are relatively thick and solid, which was considered impossible with the steam method (in the case of objects to be sterilized that are fluid in thin packages using the hot water method), the steam method is not possible. It can be done with a formula.

Therefore, it can be applied to all kinds of foods for high temperature sterilization.

Furthermore, high temperature sterilization (for unsuitable objects to be sterilized,
Sterilization at temperatures of about 95°C to 125°C is possible using the above-mentioned two-step method (therefore, it can be used for all types of food products E that require thermal sterilization) by simply changing the set temperature and pressure. be.

Further, the present invention is a device that can be used for both hot water type and steam type.
Compared to a conventional pump-based device that moves hot water, this hot water type moves hot water through a pressure difference, so the transfer time is short, there is no adverse effect on food, and there is no need to use a hot water tank for hot water. Pressurized steam is used to return the hot water to the hot water, and the sterilization process is incorporated by setting the timer E, so the conventional hot water return process is omitted.

Therefore, it is easy to set the sterilization time and is suitable for the purpose of high-temperature, short-time sterilization.

Steam type (this method uses saturated steam to sterilize thin objects with a thickness of 0.5 to 1.5 crrt that require high-temperature short-time sterilization. The outer abyss time is shorter than that of the hot water method, and sterilization can be accomplished in a short period of time.

These two methods (Kyoyo sterilization method is a changeover switch)
Moreover, it can be used in a wide temperature range from 95°C to 150°C.

Both of these sterilization methods are fully automatic and can minimize temperature changes, variations, and pressure fluctuations.

[Brief explanation of the drawing]

The drawing is a diagram showing an example of the device of the invention. 1... Hot water tank, 2... Sterilization pot, 3
...Movement valve, 4,1 ... Cut pressure air valve,
5, 6, 8, 8'. 8"...Steam valve, 9...Water supply, circulation valve, 5,6゜8,8', 8"...Steam valve,
9...Water supply, circulation valve, 10.11...
Water supply valve, 12, 13... Drain valve, 14.15,
15'... Exhaust valve, 16... Overflow valve, 17... Peacock valve, 18...
...Water pump, 19...Circulation, Water pump, 20゜20', 20" 2 Q///...
Steam pipe, 21, 21'... Pressurized air pipe, 22,
23, 23'...exhaust pipe, 24...overflow pipe, 25...circulation, water supply pipe, 26
゜27... Water supply pipe, 2B, 29-... Drainage case 30... Moving pipe.

Claims (1)

[Claims] 1. It has a hot water tank and a sterilization pot, and water, steam, and Caro pressure air are supplied to the hot water tank and the sterilization pot, respectively.
A high-temperature, high-pressure automatic heat sterilizer that is equipped with a discharging device, and in which the lower part of a hot water tank and the lower part of a sterilization pot are connected by a connecting pipe, and can selectively perform hot water sterilization or steam sterilization.